George Alfred Denny

• Diamond Drilling for Gold and Other Minerals
• Diamond Drilling for Gold and Other Minerals, a Practical Handbook on the Use of Modern Diamond Core Drills in Prospecting and Exploiting ... of the Cost of Apparatus and of Working
• The Klerksdorp Gold Fields; Being a Description of the Geologic and of the Econonic Conditions Obtaining in the Klerksdorp District, South African Rep
• Deep-Level Mines of the Rand and Their Future Development
• Klerksdorp Gold Fields
• The Deep-level Mines of the Rand and Their Future Development: Considered ..